Diane stars alongside Liam Neeson in the movie, which screened out of competition at the Berlin film festival.

She plays Gina, a taxi driver and illegal immigrant who saves Liam's character from drowning after her cab skids off a bridge into a river.

The Inglourious Basterds actress said she "would have been very happy to let a very capable stunt lady take over from me" but that her character is "a pretty tough chick really - and I felt like it was important that the audience believed that it was me."

The actress said the experience introduced her to "a whole different layer of acting."